Low Brake Fluid Warning Signs

September 3, 2022

Mechanic pouring oil into a car engine, wearing gloves, in a garage. | Rocky Mountain Car Care

When it comes to your car, you want to be sure that everything is in perfect working order.


The braking system is one of the most critical aspects of your car's functionality. If there are any problems with your brake fluid, it can lead to decreased performance and even failure of the brakes altogether.


This article will discuss brake fluids and signs you may have low brake fluid.


What is Brake fluid?

Most modern cars have hydraulic brake systems. This system uses brake fluid to transfer the force from your foot on the pedal to the brakes themselves.

Brake fluid is essential for your car's braking system. Brake fluid helps to keep your car's brakes working correctly.


But what makes brake fluid so unique?


  • Brake fluid needs to have a high boiling point to withstand high pressures and temperatures when braking.
  • Brake fluid is incompressible and will not change volume when under pressure.


Over time, brake fluid becomes contaminated with air or water and loses its properties. Contamination leads to low brake fluid and corrosion in the brake lines.


Signs you need brake fluid changes.

There are a few signs that you may be experiencing low brake fluid.


Brake warning light

Warning light should be the earliest sign of something wrong. Low brake fluid can trigger the brake warning light on your dashboard.


If you notice this, check your brake fluid level as soon as possible and take your car to an auto repair shop.


The brake pedal feels spongy.

If your brake pedal feels soft or spongy, this is a sign that contaminants have entered your brake fluid, making your brakes feel less responsive.


Discolored fluid

Brake fluid should be clear or have a slight amber color, so a dark color or a gritty texture in your brake fluid is a sign that it needs to be changed.

Another sign of low brake fluid is the car taking longer to brake than usual. If you notice these signs, take your vehicle in for brake service.


What to do when you notice low brake fluid?

The most common cause of low brake fluid is leaky seals and hoses. Regular braking system maintenance and inspection of your vehicle's brake system are pivotal.


If you believe you have low brake fluid, we invite you to bring your vehicle to Rocky Mountain Car Care today.

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